﻿<!DOCTYPE HTML>
<!-- saved from url=(0051)https://httishere.gitee.io/notion/v4/love-name.html -->
<!DOCTYPE html PUBLIC "" "">
<HTML>
<HEAD>
    <META content="IE=11.0000"
          http-equiv="X-UA-Compatible">

    <META charset="utf-8">
    <TITLE>木易巷</TITLE>
    <STYLE type="text/css">
        body {
            margin: 0;
            overflow: hidden;
            background: #000;
        }

        canvas {
            position: absolute;
            width: 100%;
            height: 100%;
        }

        #pinkboard {
            animation: anim 1.5s ease-in-out infinite;
            -webkit-animation: anim 1.5s ease-in-out infinite;
            -o-animation: anim 1.5s ease-in-out infinite;
            -moz-animation: anim 1.5s ease-in-out infinite;
        }

        @keyframes anim {
            0% {
                transform: scale(0.8);
            }
            25% {
                transform: scale(0.7);
            }
            50% {
                transform: scale(1);
            }
            75% {
                transform: scale(0.7);
            }
            100% {
                transform: scale(0.8);
            }
        }

        @-webkit-keyframes anim {
            0% {
                -webkit-transform: scale(0.8);
            }
            25% {
                -webkit-transform: scale(0.7);
            }
            50% {
                -webkit-transform: scale(1);
            }
            75% {
                -webkit-transform: scale(0.7);
            }
            100% {
                -webkit-transform: scale(0.8);
            }
        }

        @-o-keyframes anim {
            0% {
                -o-transform: scale(0.8);
            }
            25% {
                -o-transform: scale(0.7);
            }
            50% {
                -o-transform: scale(1);
            }
            75% {
                -o-transform: scale(0.7);
            }
            100% {
                -o-transform: scale(0.8);
            }
        }

        @-moz-keyframes anim {
            0% {
                -moz-transform: scale(0.8);
            }
            25% {
                -moz-transform: scale(0.7);
            }
            50% {
                -moz-transform: scale(1);
            }
            75% {
                -moz-transform: scale(0.7);
            }
            100% {
                -moz-transform: scale(0.8);
            }
        }

        #name {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            margin-top: -20px;
            font-size: 46px;
            color: #ea80b0;
        }
    </STYLE>

    <META name="GENERATOR" content="MSHTML 11.00.10570.1001">
</HEAD>
<BODY>


<!--这个是红心-->
<CANVAS id="pinkboard"></CANVAS>


<!--这个是字体-->
<!--<CANVAS id="canvas"></CANVAS>-->


<SCRIPT>
    const colors = [
        "#eec996",
        "#8fb7d3",
        "#b7d4c6",
        "#c3bedd",
        "#f1d5e4",
        "#cae1d3",
        "#f3c89d",
        "#d0b0c3",
        "#819d53",
        "#c99294",
        "#cec884",
        "#ff8e70",
        "#e0a111",
        "#fffdf6",
        "#cbd7ac",
        "#e8c6c0",
        "#dc9898",
        "#ecc8ba",
    ]; //用来设置的颜色
    var canvas = document.getElementById("canvas");
    var ctx = canvas.getContext("2d");
    let count = 1;

    var ww = window.innerWidth;
    var wh = window.innerHeight;

    var hearts = [];

    function init() {
        requestAnimationFrame(render);
        canvas.width = ww;
        canvas.height = wh;
        for (var i = 0; i < 100; i++) {
            hearts.push(new Heart());
        }
    }

    function Heart() {
        this.x = Math.random() * ww;
        this.y = Math.random() * wh;
        this.opacity = Math.random() * 0.5 + 0.5;
        this.vel = {
            x: (Math.random() - 0.5) * 4,
            y: (Math.random() - 0.5) * 4,
        };
        this.targetScale = Math.random() * 0.15 + 0.02;
        this.scale = this.targetScale * Math.random();
    }

    Heart.prototype.update = function (i) {
        this.x += this.vel.x;
        this.y += this.vel.y;

        this.scale += (this.targetScale - this.scale) * 0.01;
        if (this.x - this.width > ww || this.x + this.width < 0) {
            this.scale = 0;
            this.x = Math.random() * ww;
        }
        if (this.y - this.height > wh || this.y + this.height < 0) {
            this.scale = 0;
            this.y = Math.random() * wh;
        }
        this.width = 473.8;
        this.height = 408.6;
    };
    Heart.prototype.draw = function (i) {
        ctx.globalAlpha = this.opacity;
        ctx.font = `${180 * this.scale}px "微软雅黑"`;
        // ctx.font="20px";
        ctx.fillStyle = colors[i % 18];
        ctx.fillText(
            "木易巷",
            this.x - this.width * 0.5,
            this.y - this.height * 0.5,
            this.width,
            this.height
        );
        // ctx.drawImage(
        //   heartImage,
        //   this.x - this.width * 0.5,
        //   this.y - this.height * 0.5,
        //   this.width,
        //   this.height
        // );
    };

    function render() {
        ctx.clearRect(0, 0, ww, wh);
        // ctx.globalAlpha = 1;
        // ctx.fillStyle = "rgba(255,255,255,0.3)";
        // ctx.fillRect(0, 0, ww, wh);
        for (var i = 0; i < 100; i++) {
            hearts[i].update(i);
            hearts[i].draw(i);
        }
        requestAnimationFrame(render);
    }

    init();

    // var heartImage = new Image();
    // heartImage.onload = init();
    // heartImage.src =
    //   "";

    window.addEventListener("resize", function () {
        ww = window.innerWidth;
        wh = window.innerHeight;
    });
</SCRIPT>

<SCRIPT>
    /*
     * Settings
     */
    var settings = {
        particles: {
            length: 500, // maximum amount of particles-最大颗粒量
            duration: 2, // particle duration in sec-粒子持续时间(秒)
            velocity: 100, // particle velocity in pixels/sec-粒子速度(像素/秒)
            effect: -0.75, // play with this for a nice effect-玩这个会有很好的效果
            size: 30, // particle size in pixels-颗粒尺寸(像素)
        },
    };

    /*
     * RequestAnimationFrame polyfill
     * 请求动画帧多边形填充，立即执行函数，当解析到这一行，代码立即执行，后面的括号可以传递参数
     */
    (function () {
        var b = 0;
        var c = ["ms", "moz", "webkit", "o"];
        for (var a = 0; a < c.length && !window.requestAnimationFrame; ++a) {
            window.requestAnimationFrame = window[c[a] + "RequestAnimationFrame"];
            window.cancelAnimationFrame =
                window[c[a] + "CancelAnimationFrame"] ||
                window[c[a] + "CancelRequestAnimationFrame"];
        }
        if (!window.requestAnimationFrame) {
            window.requestAnimationFrame = function (h, e) {
                var d = new Date().getTime();
                var f = Math.max(0, 16 - (d - b));
                var g = window.setTimeout(function () {
                    h(d + f);
                }, f);
                b = d + f;
                return g;
            };
        }
        if (!window.cancelAnimationFrame) {
            window.cancelAnimationFrame = function (d) {
                clearTimeout(d);
            };
        }
    })();

    /*
     * Point class
     * 像素点的类，prototype可以给类中添加方法
     */
    var Point = (function () {
        function Point(x, y) {
            this.x = typeof x !== "undefined" ? x : 0;
            this.y = typeof y !== "undefined" ? y : 0;
        }

        Point.prototype.clone = function () {
            return new Point(this.x, this.y);
        };
        Point.prototype.length = function (length) {
            if (typeof length == "undefined")
                return Math.sqrt(this.x * this.x + this.y * this.y);
            this.normalize();
            this.x *= length;
            this.y *= length;
            return this;
        };
        Point.prototype.normalize = function () {
            var length = this.length();
            this.x /= length;
            this.y /= length;
            return this;
        };
        return Point;
    })();

    /*
     * Particle class
     *粒子类
     */

    var Particle = (function () {
        function Particle() {
            this.position = new Point();
            this.velocity = new Point();
            this.acceleration = new Point();
            this.age = 0;
        }

        Particle.prototype.initialize = function (x, y, dx, dy) {
            this.position.x = x;
            this.position.y = y;
            this.velocity.x = dx;
            this.velocity.y = dy;
            this.acceleration.x = dx * settings.particles.effect;
            this.acceleration.y = dy * settings.particles.effect;
            this.age = 0;
        };
        Particle.prototype.update = function (deltaTime) {
            this.position.x += this.velocity.x * deltaTime;
            this.position.y += this.velocity.y * deltaTime;
            this.velocity.x += this.acceleration.x * deltaTime;
            this.velocity.y += this.acceleration.y * deltaTime;
            this.age += deltaTime;
        };
        Particle.prototype.draw = function (context, image) {
            function ease(t) {
                return --t * t * t + 1;
            }

            var size = image.width * ease(this.age / settings.particles.duration);
            context.globalAlpha = 1 - this.age / settings.particles.duration;
            context.drawImage(
                image,
                this.position.x - size / 2,
                this.position.y - size / 2,
                size,
                size
            );
        };
        return Particle;
    })();

    /*
     * ParticlePool class
     * 粒子池类
     */
    var ParticlePool = (function () {
        var particles,
            firstActive = 0,
            firstFree = 0,
            duration = settings.particles.duration;

        function ParticlePool(length) {
            // create and populate particle pool
            particles = new Array(length);
            for (var i = 0; i < particles.length; i++)
                particles[i] = new Particle();
        }

        ParticlePool.prototype.add = function (x, y, dx, dy) {
            particles[firstFree].initialize(x, y, dx, dy);

            // handle circular queue
            firstFree++;
            if (firstFree == particles.length) firstFree = 0;
            if (firstActive == firstFree) firstActive++;
            if (firstActive == particles.length) firstActive = 0;
        };
        ParticlePool.prototype.update = function (deltaTime) {
            var i;

            // update active particles
            if (firstActive < firstFree) {
                for (i = firstActive; i < firstFree; i++)
                    particles[i].update(deltaTime);
            }
            if (firstFree < firstActive) {
                for (i = firstActive; i < particles.length; i++)
                    particles[i].update(deltaTime);
                for (i = 0; i < firstFree; i++) particles[i].update(deltaTime);
            }

            // remove inactive particles
            while (
                particles[firstActive].age >= duration &&
                firstActive != firstFree
                ) {
                firstActive++;
                if (firstActive == particles.length) firstActive = 0;
            }
        };
        ParticlePool.prototype.draw = function (context, image) {
            // draw active particles
            //绘制活性粒子
            if (firstActive < firstFree) {
                for (i = firstActive; i < firstFree; i++)
                    particles[i].draw(context, image);
            }
            if (firstFree < firstActive) {
                for (i = firstActive; i < particles.length; i++)
                    particles[i].draw(context, image);
                for (i = 0; i < firstFree; i++) particles[i].draw(context, image);
            }
        };
        return ParticlePool;
    })();


    /*
     * Putting it all together
     * 把它们放在一起，立即执行
     * 执行行为：
     *      1、渲染一个
     */
    (function (canvas) {
        //下面的canvas对象获取，由立即执行函数的参数传递了，不需要get获取
        // var canvas = document.getElementById("pinkboard")
        //获取上下文容器、new粒子池对象、定义变量粒子比率变量并赋值、定义事件变量
        var context = canvas.getContext("2d"),
            particles = new ParticlePool(settings.particles.length),
            particleRate =
                settings.particles.length / settings.particles.duration, // particles/sec
            time;

        // get point on heart with -PI <= t <= PI
        //定义得到像素点对象的方法，在下面虚拟画布中调用了该方法
        function pointOnHeart(t) {
            return new Point(
                160 * Math.pow(Math.sin(t), 3),
                130 * Math.cos(t) -
                50 * Math.cos(2 * t) -
                20 * Math.cos(3 * t) -
                10 * Math.cos(4 * t) +
                25
            );
        }


        function gradientColor(startColor, endColor, step) {
            startRGB = colorRgb(startColor);//转换为rgb数组模式
            startR = startRGB[0];
            startG = startRGB[1];
            startB = startRGB[2];

            endRGB = colorRgb(endColor);
            endR = endRGB[0];
            endG = endRGB[1];
            endB = endRGB[2];

            sR = (endR - startR) / step;//总差值
            sG = (endG - startG) / step;
            sB = (endB - startB) / step;

            var colorArr = [];

            for (var i = 0; i < step; i++) {
                //计算每一步的hex值
                var hex = colorHex('rgb(' + parseInt((sR * i + startR)) + ',' + parseInt((sG * i + startG)) + ',' + parseInt((sB * i + startB)) + ')');
                colorArr.push(hex);
            }
            return colorArr;
        }

        var colorRgb = function (sColor) {
            var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
            var sColor = sColor.toLowerCase();
            if (sColor && reg.test(sColor)) {
                if (sColor.length === 4) {
                    var sColorNew = "#";
                    for (var i = 1; i < 4; i += 1) {
                        sColorNew += sColor.slice(i, i + 1).concat(sColor.slice(i, i + 1));
                    }
                    sColor = sColorNew;
                }
                //处理六位的颜色值
                var sColorChange = [];
                for (var i = 1; i < 7; i += 2) {
                    sColorChange.push(parseInt("0x" + sColor.slice(i, i + 2)));
                }
                return sColorChange;
            } else {
                return sColor;
            }
        }
        // 将rgb表示方式转换为hex表示方式
        var colorHex = function (rgb) {
            var _this = rgb;
            var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
            if (/^(rgb|RGB)/.test(_this)) {
                var aColor = _this.replace('rgb', "").replace('(', "").replace(')', "").split(",");
                var strHex = "#";
                for (var i = 0; i < aColor.length; i++) {
                    var hex = Number(aColor[i]).toString(16);
                    hex = hex < 10 ? 0 + '' + hex : hex;// 保证每个rgb的值为2位
                    if (hex === "0") {
                        hex += hex;
                    }
                    strHex += hex;
                }
                if (strHex.length !== 7) {
                    strHex = _this;
                }
                return strHex;
            } else if (reg.test(_this)) {
                var aNum = _this.replace(/#/, "").split("");
                if (aNum.length === 6) {
                    return _this;
                } else if (aNum.length === 3) {
                    var numHex = "#";
                    for (var i = 0; i < aNum.length; i += 1) {
                        numHex += (aNum[i] + aNum[i]);
                    }
                    return numHex;
                }
            } else {
                return _this;
            }
        }

        var weight = 20;

        var colorArrAsc = gradientColor('#FF0000', '#0000FF', weight);


        var colorArrDesc = gradientColor('#0000FF', '#FF0000', weight);

        // alert(weight + ',' + colorArrAsc.length + ',' + colorArrDesc.length);
        //用来设置的颜色\
        // creating the particle image using a dummy canvas
        //使用虚拟画布创建粒子图像，返回了图像的像素点

        function getImageAsc(i) {
            var canvas = document.createElement("canvas");
            var context = canvas.getContext("2d");
            canvas.width = settings.particles.size;
            canvas.height = settings.particles.size;

            // helper function to create the path
            // Helper函数来创建路径
            function to(t) {
                var point = pointOnHeart(t);
                point.x =
                    settings.particles.size / 2 +
                    (point.x * settings.particles.size) / 350;
                point.y =
                    settings.particles.size / 2 -
                    (point.y * settings.particles.size) / 350;
                return point;
            }

            // create the path
            //创建路径
            context.beginPath();
            var t = -Math.PI;
            var point = to(t);
            context.moveTo(point.x, point.y);
            while (t < Math.PI) {
                t += 0.01; // baby steps!
                point = to(t);
                context.lineTo(point.x, point.y);
            }
            context.closePath();


            // create the fill
            //创建填充

            context.fillStyle = colorArrAsc[i % (weight+1)];
            // alert('asc,'+(i % weight));
            context.fill();


            // create the image
            var image = new Image();
            image.src = canvas.toDataURL();


            return image;
        };

        function getImageDesc(i) {
            var canvas = document.createElement("canvas");
            var context = canvas.getContext("2d");
            canvas.width = settings.particles.size;
            canvas.height = settings.particles.size;

            // helper function to create the path
            // Helper函数来创建路径
            function to(t) {
                var point = pointOnHeart(t);
                point.x =
                    settings.particles.size / 2 +
                    (point.x * settings.particles.size) / 350;
                point.y =
                    settings.particles.size / 2 -
                    (point.y * settings.particles.size) / 350;
                return point;
            }

            // create the path
            //创建路径
            context.beginPath();
            var t = -Math.PI;
            var point = to(t);
            context.moveTo(point.x, point.y);
            while (t < Math.PI) {
                t += 0.01; // baby steps!
                point = to(t);
                context.lineTo(point.x, point.y);
            }
            context.closePath();


            // create the fill
            //创建填充

            context.fillStyle = colorArrDesc[i % (weight+1)];
            // alert('desc,'+(i % (weight+1));
            context.fill();


            // create the image
            var image = new Image();
            image.src = canvas.toDataURL();


            return image;
        };
        var image1 = getImageAsc(0);

        // render that thing!
        //定义了一个渲染的方法，使用渲染器，渲染这些点
        function render() {
            // next animation frame
            //下一个动画帧
            requestAnimationFrame(render);

            // update time
            //更新时间，
            var newTime = new Date().getTime() / 1000,
                deltaTime = newTime - (time || newTime);
            time = newTime;
            // alert(newTime);
            // clear canvas
            //在给定矩形内清空一个矩形：
            context.clearRect(0, 0, canvas.width, canvas.height);


            // create new particles
            // 创建新粒子
            var amount = particleRate * deltaTime;
            for (var i = 0; i < amount; i++) {
                var pos = pointOnHeart(Math.PI - 2 * Math.PI * Math.random());
                var dir = pos.clone().length(settings.particles.velocity);
                particles.add(
                    canvas.width / 2 + pos.x,
                    canvas.height / 2 - pos.y,
                    dir.x,
                    -dir.y
                );
            }


            // update and draw particles
            particles.update(deltaTime);
            particles.draw(context, image1);
        }

        // handle (re-)sizing of the canvas
        //定义一个方法，初始化画布的大小
        function onResize() {
            canvas.width = canvas.clientWidth;
            canvas.height = canvas.clientHeight;
        }

        window.onresize = onResize;

        // delay rendering bootstrap
        //定义一个延迟呈现引导的方法，10微秒后重设画布，并且重新渲染，模拟心跳的效果
        setTimeout(function () {
            onResize();
            render();
        }, 10);

        var x = 0
        setInterval(function () {

            if (x <= weight) {
                image1 = getImageAsc(x);
            }
            if (x > weight && x < 2 * weight) {
                image1 = getImageDesc(x - weight)
            }
            if (x == 2 * weight) {
                image1 = getImageDesc(x - weight)
                x = 0;
            }
            x++;
        }, 1000);

    })
    (document.getElementById("pinkboard"));


    // 参考：https://blog.csdn.net/weixin_57038822/article/details/121644240
</SCRIPT>

<script>


</script>


</BODY>

</HTML>
